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On Nov 25, 2004, at 10:13, David Howells wrote: > We've been discussing splitting the kernel headers into userspace API > headers > and kernel internal headers and deprecating the __KERNEL__ macro. This > will > permit a cleaner interface between the kernel and userspace; and one > that's > easier to keep up to date. Yay!!! Finally!!! > NEW DIRECTORY DIRECTORY SHADOWED > ============= ================== > include/user/ include/linux/ > include/user-*/ include/asm-*/ How about include/abi for the platform-independent headers and include/arch-* for the platform-specific headers? Then include/arch would be symlinked to the correct arch-* directory. > Note that this doesn't take account of the other directories under > include/, but I don't think they're relevant. Perhaps such directories should either be broken out into abi/foo<->linux/foo pieces, or put into their own top-level directories. > (2) Take each file from the shadowed directory. If it has any > userspace > relevant stuff, then: [...snip...] Something like this would warn about incorrect uses of the linux/ headers, yet still allow for a period of backwards compatibility. Once such period has passed, then linux/* would not even be installed, only abi/* and arch/* include/linux/foo.h: #ifndef _LINUX_FOO_H #define _LINUX_FOO_H 1 #ifndef __KERNEL__ # warning "Directly including <kernel/foo.h> is deprecated!!!" # warning "Please change your program to include <abi/foo.h> instead!!!" #endif #include <abi/foo.h> #ifdef __KERNEL__ /* Old __KERNEL__ contents of include/linux/foo.h */ #endif #endif /* not _LINUX_FOO_H */ include/abi/foo.h: #ifndef _ABI_FOO_H #define_ABI_FOO_H 1 #include <abi/bar.h> #include <arch/baz.h> /* Old non-__KERNEL__ contents of include/linux/foo.h */ #endif /* not _ABI_FOO_H */ Cheers, Kyle Moffett -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GCM/CS/IT/U d- s++: a17 C++++>$ UB/L/X/*++++(+)>$ P+++(++++)>$ L++++(+++) E W++(+) N+++(++) o? K? w--- O? M++ V? PS+() PE+(-) Y+ PGP+++ t+(+++) 5 X R? tv-(--) b++++(++) DI+ D+ G e->++++$ h!*()>++$ r !y?(-) ------END GEEK CODE BLOCK------ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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